Live-Line Tools- Introduction, Identification, and Care Flashcards
The forerunners of modern hot-line tools were used as early as ? .
1913
Fiberglass poles were adapted for use as hot-line tools because the size and weight of wooden tools became greater as the voltages increased.
True
Hot-line tool heads are made of ? aluminum alloy to make them lighter.
heat treated
Hooks used as part of rope blocks are designed to begin to open when approximately ? of the maximum block strength is reached.
70%
The type of rope recommended for live-line blocks and live-line rope is ? .
polyester-polyester
The recommended rope for use in live line work has a Safe Working Load (SWL) of ? for ½ inch rope.
798lbs
To determine the mechanical advantage of a set of blocks, count the number of ropes just above the running blocks.
true
The OSHA standard that requires an employer to electrically test all live-line tools is 1910.269( ? ).
J
When calculating conductor weight, the weight acting on a straight line structure is the weight of the ? adjacent to the structure times a safety factor.
two half spans
When working with distribution and transmission voltages, it is critical to know what “sticks” will support the weights and voltages involved.
True
Maplac-coated wooden live-line tools should be placed in a drying cabinet for ? to one week per month, in average climates.
48 hours
Epoxiglass tools can be washed with ? to remove foreign matter if cleaning with a detergent solution does not remove it.
Acetone
Overstress or damage to live-line tools is evidenced by bent or cracked parts.
true
Swivel rings attached to wire tongs for the purpose of attaching rope blocks should be located at a maximum of ? from the head of the wire tong.
24”
The difference in the maximum working load that a 2-inch by 12-foot wire tong will support varies by ? when it is supported by a lever lift as opposed to a saddle.
75lbs
A live-line wire tong stick is sometimes referred to as a ? stick.
Lift
Wire tongs are generally used on pin-type or ? construction for maneuvering and holding conductors clear of the working area.
suspension-type
Wire tong jaws are opened and closed by ? while the jaws are on the conductor.
rotating the pole
The formula W = (Span A + Span B x W x 2) ÷ 2 is used for calculating the weight of a ? .
short span
The sticks are ? .
wire tongs
A 11/4 inch diameter roller link stick has a safe working load rating of ? .
1,000 lbs
This piece of equipment is a ? .
wire tong saddle
In order to dry out wooden live-line tools, they must be kept between ? and ? .
90 to 100 degrees
If the Maplac coating on wooden live-line tools is worn or damaged, moisture might form dangerous conductor paths.
true
When replacing ferrules on Epoxiglass poles, the adhesive must be allowed to cure for ? before the removal of the pole from the repair area.
48 hours
The sticks are an assortment of ? .
tie sticks
The minimum approach distance for 12,470 volts (phase-to-phase) is ? .
2’ 1”
This stick is a ? stick.
spiral link
This item is normally used with a wire tong and is called a(n) ? .
lever lift
This tool is a(n) ? .
adjustable insulator fork
The live-line tool being used is a(n) ? .
cotter key puller
These types of heads would be used on a ? stick.
Universal
